The chief ornaments on Cornhill ward are these: first, at the east end thereof, in the middle of the high street, and at the parting of four ways, have ye a water standard, placed in the year 1582, in manner following. A certain German, named Peter Morris, having made an artificial forcier for that purpose, conveyed Thames water in pipes of lead over the steeple of St. Magnus church, at the north end of London Bridge, and from thence into divers men’s houses in Thames street, New Fish street, and Grasse street, up to the north-west corner of Leaden hall, the highest ground of all the city, where the waste of the main pipe rising into this standard, provided at the charges of the city, with four spouts did at every tide run (according to covenant) four ways, plentifully serving to the commodity of the inhabitants near adjoining in their houses, and also cleansed the channels of the street towards Bishopsgate, Aldgate, the bridge, and the Stockes’ market. But now no such matter, through whose default I know not.[160] Then have ye a fair conduit of sweet water, castellated in the middest of that ward and street. This conduit was first built of stone in the year 1282, by Henry Walles, mayor of London, to be a prison for night-walkers, and other suspicious persons, and was called the Tun upon Cornehill, because the same was built somewhat in fashion of a tun standing on the one end. To this prison the night watches of this city committed not only night walkers, but also other persons, as well spiritual as temporal, whom they suspected of incontinence, and punished them according to the customs of this city; but complaint thereof being made, about the year of Christ 1297, King Edward I. writeth to his citizens thus:-- “Edward, by the grace of God, etc. Whereas Richard Gravesend, bishop of London, hath showed unto us, that by the Great Charter of England, the Church hath a privilege, that no clerk should be imprisoned by a lay man without our command, and breach of peace, which notwithstanding some citizens of London, upon mere spite, do enter in their watches into clerks’ chambers, and like felons carry them to the Tun, which Henry le Walleys, sometime mayor, built for night walkers; wherefore we will that this our commandment be proclaimed in full hustings, and that no watch hereafter enter into any clerk’s chamber, under the forfeit of twenty pounds. Dated at Carlisle the 18th of March, the 25th of our reign.”